CN108405551A - The method that waste LCD polaroid is detached with glass substrate - Google Patents
The method that waste LCD polaroid is detached with glass substrate Download PDFInfo
- Publication number
- CN108405551A CN108405551A CN201810106204.1A CN201810106204A CN108405551A CN 108405551 A CN108405551 A CN 108405551A CN 201810106204 A CN201810106204 A CN 201810106204A CN 108405551 A CN108405551 A CN 108405551A
- Authority
- CN
- China
- Prior art keywords
- polaroid
- glass substrate
- waste lcd
- glass powder
- glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 title claims abstract description 76
- 239000000758 substrate Substances 0.000 title claims abstract description 49
- 239000002699 waste material Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 239000012634 fragment Substances 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 150000007522 mineralic acids Chemical class 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of method that waste LCD polaroid is detached with glass substrate, step is：（1）Waste LCD is disassembled, polaroid and glass substrate conjugate are obtained；（2）Polaroid and glass substrate conjugate are put into mechanical device, such as ball mill, rod mill processing, it is big using polaroid toughness, tension fracture elongation rate, impact strength are big, can absorb large energy and generate a certain amount of deformation without pulverized, and glass substrate brittleness is strong, impact resistance is poor, it is only capable of generating the characteristic that the deformation of very little is crushed, so that the two is detached, obtain the mixture of polaroid and glass powder；（3）The mixture of polaroid and glass powder is sieved, realizes the separation of polaroid and glass substrate；（4）Obtained glass powder and polaroid are recycled as secondary resource.The present invention has many advantages, such as that easy to operate, operating cost is low, does not generate secondary pollution.
Description
Technical field
The invention belongs to solid waste resource recovery technical fields, and in particular to one kind resource from waste LCD
Change the physical treatment method of separation and recovery polaroid and glass substrate.
Background technology
Liquid crystal applications are shown till now in the number for making electronic calculator for the first time from 1973 Sheng Bao companies of Japan, liquid crystal
Display screen has that low energy consumption, long lifespan, image color are good, the convenient advantages such as frivolous by feat of it, to replace bulky CRT comprehensively
Display is widely used in all kinds of display equipment such as computer, household electrical appliance, instrument and meter.In recent years, people are to liquid
The demand of brilliant TV, desktop computer and laptop is continuously increased, and the annual growth of three is held in 23% or more, phase
It closes studies have shown that the total sales volume of this three is up to 1,500,000,000 to 2020, this will greatly increase the shipment of liquid crystal display
Amount.And the service life of liquid crystal display, in 3 ~ 5 years, China has quantity at that time as the big country of electronic product production and consumption
Huge waste LCD generates.If not being effectively treated to it, mercury, cadmium, lead contained in waste LCD,
The poisonous and harmful substances such as PBDE will cause ecological environment destruction, threaten the health of the mankind；Meanwhile in waste LCD
Also contain such as：The substance of the recoverables such as glass substrate, indium, plastic resin.Therefore, to the effective of waste LCD
Resource utilization has certain environment and economic implications.
Currently, main centralized recovery utilizes polaroid, liquid crystal, ito film and the glass in waste LCD both at home and abroad
Substrate etc..Therefore, the film layer separation problem of waste LCD become whether can high efficient resourcing recycle waste and old liquid crystal display
The key of screen.
Realize the main method that polaroid is detached with glass substrate：Organic solvent infusion method, thermal shock hair, at inorganic acid alkali
Logos.（1）Organic solvent infusion method：Polaroid is by the modes such as the adhesive such as epoxy resin, hot pressing and glass substrate knot
It closes, Fang Weiqing is proposed in a kind of waste LCD processing method using acetone soak liquid-crystalline glasses box, allows acetone
The overall separation that adhesive realizes polaroid and glass substrate is dissolved, but the time needed for the method is longer, efficiency is too low.（2）
Thermal shock Fa Lijin is intelligent et al. to be strict controlled in 230 ~ 240 DEG C using thermal shock method by temperature, destroys polaroid and glass base
The caking property of plate reaches separating effect, and the method can make the separation rate of polaroid reach 90% or more, but high temperature can make polaroid
In substance decomposition, burning generate secondary pollution gas.（3）Inorganic acid alkali facture：Li Long pearls et al. utilize inorganic base
The method that NaOH and inorganic acid HF heating is impregnated realizes detaching for polaroid and glass substrate, but alkali used, pickle liquor cannot
Recycling cost recovery is high, corrosivity is strong, severe operational environment.Therefore, develop it is efficient, simple, do not generate secondary pollution
Waste LCD film layer isolation technics it is particularly significant.
Invention content
In order to avoid the problems of the above-mentioned prior art, the present invention provides a kind of for separating and recovering waste and old liquid crystal display
Shield the physical treatment method of polaroid and glass substrate, tension fracture elongation rate, impact strength big using polaroid toughness
Greatly, it can absorb large energy and generates a certain amount of deformation without pulverized, and glass substrate brittleness is strong, impact resistance is poor, is only capable of
The i.e. pulverized characteristic of the deformation of very little is generated, so that the two is detached, obtains the mixture of polaroid and glass powder.
The invention discloses a kind of processing method that waste LCD polaroid is detached with glass substrate, including it is as follows
Step：
（1）Waste LCD is disassembled by physics, removal cable, plastic components, wiring board, backlight module, metal frame
Frame, fluorescent tube obtain polaroid and glass substrate conjugate；
（2）By step（1）Obtained waste LCD polaroid and glass substrate conjugate
It is cut into the fragment of suitable size, obtains polaroid and glass substrate conjugate fragment；
（3）By step（2）Obtained polaroid is put into mechanical device with glass substrate conjugate fragment and handles, and obtains polaroid
With the mixture of glass powder；
（4）By step（3）Obtained polaroid is sieved with glass powder mixtures, respectively obtains polaroid and glass powder.
（5）By step（4）Obtained polaroid is recycled with glass powder respectively as secondary resource.
Preferably, the step（1）In, it is disassembled using waste LCD disassembling apparatus, removal cable, plastics
Component, wiring board, backlight module, metal framework, fluorescent tube obtain polaroid and glass substrate conjugate.
Preferably, the step（2）In, polaroid and glass substrate conjugate are cut into 8 ~ 12 cm2Fragment.
Preferably, the step（3）In, mechanical device can be ball mill, rod mill etc., and the parameter of ball mill is：Ball material
Than being 3 ~ 5:1, pan feeding size is 8 ~ 12 cm2, rotational speed of ball-mill is 70 ~ 100 r/min, and Ball-milling Time is 10 ~ 20 h；Rod mill
Parameter be：It is the rod iron of 185mm as rod milling medium to use 10 a diameter of 18 ~ 20mm, length, pan feeding size is 8 ~
12cm2, drum speed is 100 ~ 120r/min, and the rod milling time is 10 ~ 20h.
Preferably, the step（4）In, polaroid and glass powder are used into 10 ~ 20 mesh nylon sieve separations.
Compared with prior art, waste LCD polaroid of the present invention and glass substrate separation method, are adopted
The polaroid of waste LCD is detached with glass substrate with mechanical device, solves present waste LCD resource
Change polaroid and glass substrate low separation efficiency in recycling industry, it is of high cost the problems such as.The present invention has separative efficiency high, simple
Just, operating cost is low and cleans the advantages that not generating secondary pollution.
Description of the drawings
Fig. 1 is the flow chart that waste LCD polaroid detaches embodiment with glass substrate in the present invention.
Fig. 2 is the disposition figure of sample in the present invention, wherein A is the polarisation disassembled from waste LCD
Piece and glass substrate conjugate sample；B is the polaroid isolated from polaroid and glass substrate conjugate；C is from polaroid
The glass powder isolated with glass substrate conjugate.
Specific implementation mode
The present invention has different physical properties, polaroid toughness big using polaroid using mechanical device from glass substrate
Its material character is softer, there is higher tension fracture elongation rate and larger impact strength, can absorb large energy production
Raw a certain amount of deformation is without pulverized, and glass substrate is then on the contrary, impact resistance is poor, is only capable of generating the deformation of very little i.e.
It is pulverized, to realize the recycling that efficiently separates of waste LCD polaroid and glass substrate, the present invention with it is efficient,
The advantages that operating method is simple, operating cost is low and cleanliness without any pollution.
Embodiment 1：
In order to better understand the present invention, with reference to Fig. 1 to the present invention carry out it is clear, be fully described by, be as shown in Figure 1 this
The flow chart of invention, a kind of waste LCD polaroid and glass substrate separation method, treatment process include mainly with
Lower step.
（1）Waste LCD waste LCD disassembling apparatus physics is disassembled, removal cable, plastic section
Part, wiring board, backlight module, metal framework and fluorescent tube obtain polaroid and glass substrate conjugate.
（2）Polaroid and glass substrate conjugate are cut into sizeable fragment, ball milling in ball mill is put into, by ball
It is 5 that the parameter of grinding machine, which is set as ratio of grinding media to material,:1, pan feeding size is 8 cm2, rotational speed of ball-mill is 100 r/min and Ball-milling Time is 20
H, ball milling obtain polaroid and glass powder mixtures after the completion.
（3）The nylon screen of 20 mesh of the mixture of polaroid and glass powder is sieved, polaroid and glass are respectively obtained
Glass powder.
（4）Obtained glass powder and polaroid are recycled as secondary resource.
Embodiment 2：
In order to better understand the present invention, with reference to Fig. 1 to the present invention carry out it is clear, be fully described by, be as shown in Figure 1 this
The flow chart of invention, a kind of waste LCD polaroid and glass substrate separation method, treatment process include mainly with
Lower step.
（1）Waste LCD waste LCD disassembling apparatus physics is disassembled, removal cable, plastic components
Deng obtaining polaroid and glass substrate conjugate.
（2）Polaroid and glass substrate conjugate are cut into sizeable fragment, are put into rod mill, using 10
A diameter of 18mm, the rod iron that length is 185mm, pan feeding size are 8cm2, drum speed is 120r/min and the rod milling time is
20h obtains polaroid and glass powder mixtures after the completion of rod milling.
（3）20 mesh nylon screens of the mixture of polaroid and glass powder are sieved, polaroid and glass are respectively obtained
Powder.
（4）Obtained glass powder and polaroid are recycled as secondary resource.
Fig. 2 is the disposition figure of sample in the present invention, wherein A is the polarisation disassembled from waste LCD
Piece and glass substrate conjugate sample；B is the polaroid isolated from polaroid and glass substrate conjugate；C is from polaroid
The glass powder isolated with glass substrate conjugate.
Claims (7)
1. the processing method that waste LCD polaroid is detached with glass substrate, which is characterized in that include the following steps：
（1）Waste LCD is disassembled by physics, excessive parts is removed, obtains polaroid and glass substrate conjugate；
（2）By step（1）Obtained polaroid is cut into block with glass substrate conjugate, obtains polaroid and glass substrate knot
Close object fragment；
（3）By step（2）Obtained polaroid is placed in mechanical device with glass substrate conjugate fragment and handles, and obtains polaroid
With the mixture of glass powder；
（4）By step（3）Obtained polaroid is sieved with glass powder mixtures, respectively obtains polaroid and glass powder；
（5）By step（4）Obtained polaroid is recycled with glass powder respectively as secondary resource.
2. the method as described in claim 1, which is characterized in that step（1）In, use waste LCD disassembling apparatus pair
Waste LCD is disassembled, and removal cable, plastic components, wiring board, backlight module, metal framework, fluorescent tube obtain
To polaroid and glass substrate conjugate.
3. the method as described in claim 1, which is characterized in that step（2）In, polaroid and glass substrate conjugate are cut
At 8 ~ 12cm2Fragment.
4. the method as described in claim 1, which is characterized in that step（3）In, the sample cut is placed in ball mill or stick
It is handled in grinding machine.
5. method as claimed in claim 4, which is characterized in that the parameter of ball mill is：Ratio of grinding media to material is 3 ~ 5:1, pan feeding size
For 8 ~ 12 cm2, rotational speed of ball-mill is 70 ~ 100 r/min, and Ball-milling Time is 10 ~ 20 h.
6. method as claimed in claim 4, which is characterized in that the parameter of rod mill is：Using 10 a diameter of 18 ~ 20mm,
Length is the rod iron of 185mm, and pan feeding size is 8 ~ 12cm2, drum speed is 100 ~ 120r/min, and the rod milling time is 10 ~ 20h.
7. the method as described in claim 1, which is characterized in that step（4）In, polaroid and glass powder are used 10 ~ 20
Mesh nylon sieve separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106204.1A CN108405551A (en) | 2018-02-02 | 2018-02-02 | The method that waste LCD polaroid is detached with glass substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106204.1A CN108405551A (en) | 2018-02-02 | 2018-02-02 | The method that waste LCD polaroid is detached with glass substrate |
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| Publication Number | Publication Date |
|---|---|
| CN108405551A true CN108405551A (en) | 2018-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810106204.1A Pending CN108405551A (en) | 2018-02-02 | 2018-02-02 | The method that waste LCD polaroid is detached with glass substrate |
Country Status (1)
| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109174913A (en) * | 2018-09-10 | 2019-01-11 | 徐州菲宁环保科技有限公司 | Valuable component dry method recovery in a kind of discarded colored filter |
| CN110369043A (en) * | 2019-08-13 | 2019-10-25 | 青海黄河上游水电开发有限责任公司光伏产业技术分公司 | A kind of glass separation and recovery equipment and recovery method for cullet photovoltaic module |
| CN113325616A (en) * | 2021-05-31 | 2021-08-31 | 南京万舟发机电科技有限公司 | Method and device for separating polaroid and glass substrate of waste liquid crystal display screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109174913A (en) * | 2018-09-10 | 2019-01-11 | 徐州菲宁环保科技有限公司 | Valuable component dry method recovery in a kind of discarded colored filter |
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| CN113325616A (en) * | 2021-05-31 | 2021-08-31 | 南京万舟发机电科技有限公司 | Method and device for separating polaroid and glass substrate of waste liquid crystal display screen |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180817 |
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